Boiler.



IVI. l. GARNEY.

BOILER.

APPLICATION FILED AUG. 7, I9I5.

1,169,065., Patented Ian 18, 1916.

UNUSED @lllilll PATENT FFQE.

MICHAEL JOSEPH CARNEY, OF KEWANEE, ILLINOS.

BOILER.

T0 all 't0/om t may Concern Be it known that I, MICHAEL JOSEPH Can- Nnr, a citizen of the United lStates, residingY States tiled by me on the tenth day of Feb# ruary, A. D. i915, Serial No. 7435. `ln Said application there is set forth a Structure wherein it possible to conve;7 a current of outside air into the fire-box and deliver the saine immediately above the bed of coals therein. part ol the means for doing; this (consists of a pipe projecting dowmvardlj,T ,into the reebox, and on account of the ex- 'treme heat therein it is considered advisable to protect such pipe by means of a Waterjacltet or drinn closed at its lower end and eoimnnnieating at its upper end with the main supply ot water in the boiler. To prevent sediment from .fieeurnulating' in the water drum and interferingl with the. effectiveness thereo'tl l provide means ot communication betweenthe lower end of said drum and the water spaces in the boiler at the sides thereof. A. circulation of water through the drum is thus provided for, and the saine kept free from obstruction.

ln the drawings, the ligure is a partial ero i-section of a boiler equipped with my invention.

l represents a. boiler of usual construction and 2 the tire-box thereof, from which lues 3 extend rearwardly through the boiler.

l is the masonry or shell in which the boiler is inelosed and 5 a part of the .trout plate thereof. l

jWithin the Shell il :inst above the boiler is an air-compartment 6, into which air is introdueed through one or more pipes 7. and projected downwardly from the chamber 6, through the boiler l and into the lire-box is a pipe 8, the lower end of which is just above the fuel supply in the lire-box. A current et' air is introduced through such pipe and Specification of Letters Patent.

Patented Jain. 13, lli.

Application filed August 7, 1915. Serial No. 44,320.

distributed over the coals, aiding in .the coinbustin thereof.

To prevent the projecting part of the pipe 8 from being injured or destroyed by the great anionnt of heat in the tire-box, l inelose the saine in a drinn 9, closed at its lovver end, and open at the upper end, so as to communicate with the space in the upper part oiE the boiler, and receive a supply of water therefrom. To prevent the Water in the drum i) from being dead, and sediment accumulating therein, a pair ot pipes l() isi provided. connecting the loiver end of Said drinn with the spaces 11 in the sides ot' the boiler. A circulation of the water through such drum and pipes takes place, keeping the saine tree troni an;Y obstruetion, and perf inanently eiieetive 'For the purpose for which it is provided.

While the devices shown and described in said toi-nier application relate more epeeiall;T to the suppl)v of a. rurreut of super-heated air or other fluid to the firefbox, it is obvious that the protective devices herein set forth are equall)Y useful and etlectiveI in connection with the intrmlnetion oil a Current of cold air, it the saine, be considered preti erable. and that the sanne can be employed in any ease ol the introduction of air, gras, ele.. into lthe lire-box h v means of a, projecting pipe or similar means, which would be liable to 'injury from the excessive heat et' the flames in the tire-box.

What l rlaiin as my invention and desire to secure. h r Letters Patent of the United States, is:

i. A. device of the class described, eonipriaing.,r a boiler: av lire-box therein; an airrhanlber supported above the lire-box; means lor introducing a supplyv olf r int-o said air-rlnunber; a pipe proieoted -from said airchamber into the lire-box; and` a` watendruni inclosingrthat part oi" said pipe which extends into the tire-box. and eonnnilnicating with the niain bodj7 of water in said boiler.

'2. ln a device oli the elass described, a` boiler; a lire-bmr therein; an air-chamber supported abore said ire-boxg means for introducing a supply oi air into Said airchamber; a pipe projected from Said airchamber through the boiler and into said In testimony whereof I aix my signature fire-box; a Water-drum, inclosing that porin presence of two witnesses.

tion of said pipe whichextends into the {irebox, and communicating at its upper end p .MICHAEL JOSEPH CARNEY 5 with said boiler; and lmeans of communica- Witnesses:

tion ybe'sfveen the lower end of said water- W. N .-HAsKE-1.L,

' drum'ant saidboiler. FRANK W. HASKELL. 

